https://www.poolspot.com.au/products/motor-unit-pcb-dyn-pre-2021-for-dolphin-m400-m500 2026-09-02T20:48:44+10:00 daily https://cdn.shopify.com/s/files/1/0827/8999/0593/files/9995009.jpg?v=1781087355 Motor Unit PCB Dyn (Pre 2021) for Dolphin M400 / M500